PLATE XXV. 



Variabilis-suhzone. 



Fig. 1. — Haugia jugosa (Sowerby). 



Fig. 1. — Front view of the specimen depicted in Plate XXIV. (Page. 149.) 



Fig. 2. — Haugia vaeiabilis (d'Orbigny). 



Fig. 2. — Side view of a small specimen with the characteristic reflexed 



ribs and the open umbilicus ; test partly preserved. Compare with Haugia 



jugosa, Plate XXIII, figs. 11 and 14. Cotteswold Sands. North Nibley, Gloucester- 

 shire. My Collection. (Page 146.) 



Jurense-zone (Striatulum-beds). 

 Figs. 3 — 7. — Haugia Esbei {Oppel). 



Fig. 3. — Side view of a typical specimen, but without test. Coaley Wood, 

 Gloucestershire, Bed No. 8. My Collection. (Page 155.) 



Fig. 4. — Front view of the same specimen. 



Fig. 5. — Side view of a larger but not nearly adult specimen. The test on the 

 specimen is not preserved. North Nibley, Bed No. 15. My Collection. 



Fig. 6. — Front view of the same specimen, showing the difference where the 

 hollow carina is present, and where it is absent. 



Fig. 7. — Side view of a more umbilicate and more compressed form, in which 

 a certain amount of obscure fasciation of the ribs is to be noticed. Stinchcombe 

 Hill, Gloucestershire. My Collection. 



